This is part of a Stream I got from Tato a week or so back. Basically what's happened here is Nyuu Mew Kurogawa found herself landed in a dimension/world of Babyfurs (Who are, yes, fully autonomous and don't actually need adults to care for them). They only have one real law: No Adults Allowed. So when Nyuu was caught by a trio of these Babyfurs, they decided her 'punishment' was to be dressed up like a baby, and put in one of their nurseries.